Pandora and Endor, eat your hearts out. The first known moon outside of our solar system may have been found, and it seems weirder than we ever could have imagined.

Exomoons have long been predicted to exist – some may even be habitable worlds – but until now, no one had detected any. "This is the first serious candidate from any survey that I am aware of," says astronomer David Kipping of Harvard University, who was not involved in the discovery.